几个关于利用傅里叶变换进行谐波分析的代码。有详细的变换过程，比较适合想了解原理的初学者。...

手机客户端和servlet的通讯-client and mobile communications servlet

本程序包括聊天室的客户端和服务器端，使用CSocket-the procedures include chat rooms client and server side, use CSocket

一个串口通信的例子-Example of serial communication programming.

基本功能高效的CAN通讯应用.同样,CAN232 不仅适应基本CAN-bus产品,也满足基于高层协议如ModBUS、DeviceNet...之间可选 3. RS232接口,波特率在1200bps-basic functions of CAN efficient communications applications. Similarly, the CAN232 not only meet the basic CAN-bus products, but also to meet for high-level protocols such as ModBUS, DeviceNet ... between three options. RS232 interface, baud rate in 1200

传真通讯是现代图像通讯的重要组成部分，也是传递静止图像的最重要手段。介绍了数字传真原理与应用。-Fax communications in modern image communication is an important component of the transmission of still images is the most important means. Introduced the principle and application of digital fax.

西门子S7-300和S7-400的梯形图编程手册,供需要的人参考-Siemens S7-300 and S7-400 of the ladder programming manual for those who need it for reference

光纤光缆技术发展以及在FTTH中的应用 综述了近期光纤光缆制造、施工及维护技术上的发展特点，分析了其发展趋势，并就我国光纤光缆技术与产业的发展提出了一些值得思考的问题。FTTH正在走入人们实用化的视野，国内外很多光缆生产厂商或研究所都提出了自己的构想，本文着重介绍了FTTH应用中的一些典型的光纤及光缆技术，对FTTH在我国的发展前景做了分析，并提出了自己在FTTH发展中的一些观点。-Technological development of optical fiber and cable as well as in FTTH Applications in the near future of optical fiber and cable manufacturing, construction and maintenance of the characteristics of technological development, analyzes its development trends, and technology with China s optical fiber and cable industry raised some food for thought. FTTH is the people into a practical perspective, many domestic and international fiber optic cable manufacturers or research institutes have put forward their own ideas, this article highlights the FTTH application of some typical fiber-optic and fiber optic technology, the development of FTTH in China prospects analysis and put forward its own FTTH development in some of the points.

在Delphi下用windowsAPI进行串口通讯编程，已在Delphi6.0下编译通过-WindowsAPI in Delphi for using serial communication programming, has been compiled through under Delphi6.0

TCP到串口的数据转发应用程序，并将收发内容以文本和十六进制形式显示出来-TCP to transmit serial data applications and content to send and receive text and displayed in hexadecimal

用spcomm编写的串口监视程序，包括在线监视和离线监视-spcomm prepared with the serial monitoring program, including online and offline monitoring surveillance